121022749 has 2 divisors, whose sum is σ = 121022750. Its totient is φ = 121022748.

The previous prime is 121022731. The next prime is 121022753. The reversal of 121022749 is 947220121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112572100 + 8450649 = 10610^2 + 2907^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022749 - 2⁷ = 121022621 is a prime.

It is a super-3 number, since 3×121022749³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121622749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511374 + 60511375.

It is an arithmetic number, because the mean of its divisors is an integer number (60511375).

Almost surely, 2^121022749 is an apocalyptic number.

It is an amenable number.

121022749 is a deficient number, since it is larger than the sum of its proper divisors (1).

121022749 is an equidigital number, since it uses as much as digits as its factorization.

121022749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 121022749 is about 11001.0339968568. The cubic root of 121022749 is about 494.6397392264.

It can be divided in two parts, 121022 and 749, that added together give a triangular number (121771 = T₄₉₃).

The spelling of 121022749 in words is "one hundred twenty-one million, twenty-two thousand, seven hundred forty-nine".